refactor: improve string naming

Author: devvaannsh

src/nls/root/strings.js

@@ -196,8 +196,8 @@ define({
     "LIVE_DEV_TOOLBOX_IMAGE_GALLERY": "Image Gallery",
     "LIVE_DEV_TOOLBOX_STYLER": "Styles",
     "LIVE_DEV_TOOLBOX_MORE_OPTIONS": "More Options",
-    "LIVE_DEV_STYLER_FILL": "Background color",
-    "LIVE_DEV_STYLER_TEXT": "Text color",
+    "LIVE_DEV_STYLER_BACKGROUND": "Background color",
+    "LIVE_DEV_STYLER_TEXT_COLOR": "Text color",
     "LIVE_DEV_STYLER_FONT": "Font family",
     "LIVE_DEV_STYLER_SIZE": "Font size",
     "LIVE_DEV_STYLER_WEIGHT": "Font weight",